Patent US3248542A successfully refreshed from Google Patents.
US3248542A
Expired / Lapsed
US
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Electron beam devices having plural chambers designed to be assembled and disassembled
Assignee: Hilger and Watts Ltd
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Filing: 1963-03-20
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Granted: 1966-04-26
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Expires: 1983-03-20
Abstract
No abstract record available.
Inventors
- 👤 Nixon William Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:21
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J29/00; H01J29/46; H01J29/82; H01J37/04; H01J37/147; H01J37/15; H01J37/16; H01J37/30; H01J37/3002; H01J37/3005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
ELECTRON BEAMS EQUIPMENT COMPRISING A PLURALITY OF UNITS WHICH ARE DESIGNED TO BE ASSEMBLED AND DISASSEMBLED FROM A LIMITED NUMBER OF UNITS ARRANGED TO BE COUPLED TO FORM A RIGID ASSEMBLAGE INCLUDING MEANS FORMING AN EVACUABLE SPACE PROVIDING AN ELECTRON PATH, AN ELEMENT TOWARDS WHICH ELECTRONS ARE DIRECTED, SAID UNITS INCLUDING AN ELECTRON GUN UNIT AT ONE END OF THE ASSEMBLAGE AND A TERMINAL CHAMBER UNIT AT THE OTHER END OF SAID ASSEMBLAGE, AT LEAST ONE INTERMEDIATE UNIT DISPOSED BETWEEN SAID ELECTRON GUN UNIT AND SAID TERMINAL UNIT AND IN DISCONNECTABLE VACUUM-TIGHT SEALING CONTACT BETWEEN SAID ELECTRON GUN UNIT AND SAID TERMINAL UNIT, SAID INTERMEDIATE UNIT INCLUDING A LENS STRUCTURE ADAPTED TO EXERT A FOCUSING EFFECT ON ELECTRONS EMITTED FROM SAID GUN AND PASSING TOWARDS THE TERMINAL COMPONENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |